Add Yahoo as a preferred source to see more of our stories on Google. Large muscles like the hamstrings and glutes tend to get all the glory on leg day, but don't sleep on a very important group of ...

If you run, you need to care about your calves – the muscles that generate much of the force that powers your stride. Strong calves not only help you to run faster and more efficiently, but also ...

For lower-body workouts from Stephanie Mansour routines — plus fitness challenges, walking podcasts, meal plans and inspiration — download the Start TODAY app! Large muscles like the hamstrings and ...